Tubing hanger



Nov. l0, 1931.

s. P. TscHAPPA-r TUBING HANGER original Filed Feb. 15. lze 2sheets-sheet 1 INVENTOR. .5f/www j. 775cm: PPA T,

BY BWM/MW A TTORNE NOV. 10, 1931. s, p TSCHAPPAT 1,830,893

TUBING HANGER Original Filed Feb. 15. 1926 2 Sheets-shew 2 f z,l'HW/ENTOR.

A TTORNE Y.

Patented Nov. 10, 1931l 1,Is..o,s93v

REISSUED N UV 1 8 194| UNITED STATES PATENT' OFFICE BHERIDAN P.TSCHAPPAT, OF TULSA, OKLAHOMA, ASS-IGNOR OF ONE-HALF TO HAROLD CALLAHAN,OF INDEPENDENCE, KANSAS lTUBING' HANGER Continuation ofappliqationSerial No. 88,272, led February 15, 1926. This application led June 18,1928.

Serial No. 286,403. n

My invention relates to tubing hangers, used in connection with oilwells.

My invention embodies a tubing hanger which suspends the tubing on thecaslng head, at the top of the well by means of slips which grip aroundthe tubing, as distinguished from the old method of hanging the tubingby engaging the coupling of the tubing. My device also provides reliableand simple means to pack olf gas and fluid between the casing head andtubing, where there is considerable pressure. I may also provide ahanger embodying a bowl which will depend into the casing head, allowingmore room for the pumping operation above the casing head. An importantfeature ofthe invention is the provision of pairs of spaced recesses inthe top of the slips, affording a finger grip and this finger gri mayhave an opening formed therein, where y a temporary handle may beconveniently attached thereto.

A further feature of the invention is the forming of a recess or sto forthe rubber packing, which is afforded y the top of the slips and alsmall shoulder in the bowl or casing.

A further feature of the invention is the provision of a compressionring which may be drawn tightly down upon the rubber packing forming agas-tight joint. A further feature of the invention is the provision of-a hanger embodying a bowl t at projects down into the caslng head,instead of extending above the same, thus leaving more room 35 for thepumping operation directly above it.

In the accompanying drawings, forming a part of this specification, andin which like numerals are employed to designate like parts throughoutthe same,

Figure 1 is a plan view of a tubing hanger embodying my invention,

Figure 2 is a vertical section taken on line 2-2 of Figure 1,

Figure 3 is a plan view of the hanger, the 45 packmg ring andcompression ring being omitted,

s1 Figure 4 is a side elevation of one of the ips,

Figure 5 is a detailed section through one 50 of the slips showing thefinger grip element,

Figure 6 is a partly diagrammatic view, showlng the relative width ofeach slip,

' Figure 7 is a plan view of a tubing hanger embodying a modified formof my invention,

Figure 8 is a vertical section taken on line 8 8 of Figure 7 and Figure9 is a plan view of the hanger, the packing ring and compression ringbeing v omitte The present application is a continuation of myco-pending application for tubing hanger, `filed February 15, 1926,Serial No. 88,272. My co-pending ap lication for tubing hanger, Serial No. 88,2 2, led February 15, 1926 is consolidated with the presentapplication, Serial No. 286,403. v

Attention being called to Figures 1 to 5 inclusive, the numeral 10designates a tapered cylindrical casing or bowl, decreasing in diameterdownwardly, and provided near its top with an outwardly projectingflange 11, to be seated within the top of a casing head 12, above theshoulder 13 thereof, with suitable packing 14, between these parts, asshown.

The flange 11 has an inclined face 15, to be engaged by bolts 16, tofirmly clamp the casing or bowl in place. The casing or bowl 10,therefore, depends into the casing head, thereby affording more room forthe pumping operatiom, above the casing head.

The casing or bowl 1() is provided with a downwardly tapered opening orbore 17, and at the top of this bore, with an enlarged cylindricalopening or bore 18, which affords a horizontal shoulder 19. Adapted tooperate within the tapered bore 17 are segmental tapered sliding slips20, havin serrations 21, as shown. At its top, each s ip is providedwith a pair of recesses 22, forming a finger grip portion 23. Therecesses 22 are suiiiciently large to permit of the fingers beinginserted therein, to engage the linger grip 23. This finger grip is, ofcourse, preferably integral with the slip and the finger grip is Aprovided with a transverse opening 24, by

means of which a cable 24 or other temporary supportmay be convenientlyattached, to the finger grip.

As clearly shown in Figure 6, the diameter of the lower end 17 of thetapered bore 17 is slightly smaller than the width of the upper end ofeach slip, thereby rendering it .impossible for any of the slips to dropfrom the bowl into the tubing. This eliminates the possibility of anexpensive operation of fishing the tool out of the well.

The numeral 25 designates a compressible packing ring, preferably formedof rubber, which is adapted to rest upon the top of the slips and theshoulder 19, and to be pressed against the same by a compression ring26, adapted to enter the top of the bowl, as shown. This compressionring 26 is moved downwardly by bolts 28, engaging therewith, and havingscrew-threaded engagement within lugs 29, formed upon the top of thebowl.

In the use of the device, the casing or bowl 10 is arranged within thecasing head 12, and depends into the same. The bowl extends for only aslight distance above the top of the casing head, whereby the maximumspace is aorded above the casing head..

for the pumping operation or the like. When the bolts 28 are screwed up,the compressible packing ring 25 is compressed, forming a gas-tightjoint with the shoulder 19, the tops of the slips, and the tubing.Further, the packing ring, while under compression, serves to force theslips downwardly into clamping engagement with the tubing, therebyfurther reducing the possibility of the tubing slipping.

In Figures 7 to 9, inclusive, I have shown a modification of theinvention, wherein the numeral 30 designates a preferably cylindricalcasing or bowl, provided near its bottom with an outwardly projectingflange 31, to be seated within the top of a casing head 32, above theshoulder 33 thereof, with suitable packing 34, between these parts, asshown. The ange 31 has an inclined face 35, to be engaged by bolts 36,to firmly clamp the casing or bowl in place.

The casing or bowl 30 is provided with a downwardly tapering opening orbore 37, and at the top of this bore, with an enlarged cylindricalopening or bore 38, which is screw-threaded, and affords ashoulder 39.Adapted to operate within the tapered bore 37 are segmental slips 40having serrations 41. These slips are identical with the slips 20hereinbefore described.

The numeral 42 designates a compressible packing ring, preferably formedof rubber, which is adapted to rest upon the top of the slips 40 andshoulder 39, and to be compressed againstlthe same by a compression ring43, having screw-threaded engagement within the screw-threaded bore 38as shown. The compression ring is provided with radial projections 44,so that it may be conveniently turned.

In the use of the device, the casing or bowl may be a plied to thecasing head, as indicated in igure 8. When the compression nut 43 isscrewed down, the packing ring 42 will be compressed against the top ofthe slips and the shoulder 39, and a gas-tight joint will be effected.

It is to be understood, that the forms of my invention, herewith shownand described, are to be taken as preferred examples of the same, andthat various changes in the shape, size and arrangement of parts, may

be resorted to without departing fromthe spirit of my invention, or thescope of the subjoined claims.

Having thus described my invention, I claim 1. A combined tubing hangerand packing ofi' device, comprising a bowl having a bore with a taperedpart, the upper end of the bore being open, slips arranged within thetapered part of the bore for engagement with a tubing, the upper ends ofthe slips terminating at an elevation beneath the top of the bore of thebowl, a compressible packing ring disposed within the upper portion ofthe bore above the tops of the slips, said packing ring Serving to forcethe slips downwardly into engagement with the tubing and also forming agas-tight jointwith the bowl and tubing, a compression ring arrangedabove the packing ring to force it downwardly with relation to the bowl,the arrangement being such that access may be had to the packing ring byadjustment of the compression ring without raising or disconnecting thetubing or stopping the operation of the well.

2. A combined tubing hanger and packing off device, comprising a bowlhaving a bore with a tapered part, a plurality of slips within thetapered part of the bore for engaging a tubing, a compressible packingring arranged adjacent to the top of t-he bowl and disposed above theslips, said packing ring serving to form a gas-tight joint with the bowland the tubing, and adjustable means to exert a downward pressure uponthe packing ring, such means being so constructed that access may be hadto the packing ring without raising or disconnecting the tubing orstopping the operation of the well.

3. Acombined tubing hanger and packing olf device, comprising a bowlseparate from the casing head and having an exterior iange so that thebowl may be supported by the casing head, said bowl having a bore with atapered part, slips arranged within the tapered part of the bore toengage with a tubing, a compressible packing ring arranged adjacent tothe top of the bowl and disposed above the slips, said packing ringforming a gas-tight joint with the bowl and the tubing,.and adjustablemeans to exert a downward pressure upon the packing ring, theconstruction of such means and the location of the packing ring beingsuch that access lreactants` may be had to the packing ring withoutraising or disconnecting the tubing or stopping the o eration of thewell.

k4. n a combined tubing hanger and fluid acking off device, a bowlhaving a tapered ore and an enlarged bore near the u (per end of thetapered bore to form a shou er, slips slidable in the tapered bore, foren aging with a tubing, a compressible pac ing ring surroundin thetubing and engaging the tops of the sllps and the shoulder, acompression ring arranged above the packing ring, to force the samedownwardly, an means whereby the compression ring may be moveddownwardly with relation to the tubing to compress the packing ring.

5. In a combined tubing hanger and packing off device, a bowl having abore which is tapered, a plurality of sliding slips operating within thetapered bore for engaging with a tubing, a-compressible packing ringsurrounding the tubing within the bowl ,A

above the slips and engaging the tops of the slips, said packing ringserving to force the slips downwardly into engagement with the tubingand also being adapted to form a gastight joint with the bowl, acompression ring arranged above the packing ring to force the samedownwardly and means whereby the compression ring may be moveddownwardly with relation to the bowl to compress the packing ring.

6. In a combined tubing hanger and packing off device, a bowl having abore with a tapered part, slips slidable Iin the tapered part of thebore for engaging a tubing, a compressible `packing ring arranged abovethe slips and-in close relation with the bowl and tubing, a compressionring arranged above the packing ring to force the same downwardly andhaving screw-threaded engagement with the upper portion of the bowl andhaving a part arranged exteriorly of the bowl, such exterior part beingadapted for engagement with a tool for turning the same.

7. In a combined tubing hanger and packing off device, a'bowl having abore with a tapered part, slips slidable in the tapered part of thebore` for engaging a tubin a compressible packing rin arranged a ove theslips and 1n close relation with the bowl and tu ing, and a compressionring arranged above the packing ring to force the same downwardly andhaving screw-threaded engagement with the upper portion of the bowl.

8. A combined tubing hanger and packing o' device, comprising a bowlseparate from the casing head and having an exterior flange arrangednear its u per end so that the bowl may be supported rom the casing headand havlng the lmajor portion of its length arranged within the casinghead, said bowl havin g a. bore with a tapered part, slips arrangedwithin the tapered part of the bore to engage with a tubing, acomlpressible ackin rin arranged adjacent to t e top of an disposedabove the sli s, said acking ring. forming a gas tight joint with t ebowl ebow Y laoV

